The comment on this line is inaccurate: PolyGerrit does not set a change
ready by calling first the Set Ready endpoint followed by the Post
Review endpoint. In fact, it just does a single Post Review with
ready=true in the ReviewInput. This case was already handled by
ChangeNotificationsIT#commentOnWipChangeAndStartReview.
In fact, the extra review method should send no email at all, since
there is no message. Thus it was just a no-op and a distraction in these
tests.
Change-Id: I47d8d486145bd01cda2722ec388899bb3e5d1691
ad38704c4c